This section applies only to the following governmental entities: a county; a municipality; a public corporation or other political subdivision of the State; and any instrumentality or agency of a county, municipality, public corporation, or other political subdivision of the State. A bond or grant anticipation note issued under Part III of this subtitle shall be considered investment securities to the extent set forth in this section. If a bond issued by a governmental entity otherwise complies with the requirements of the Commercial Law Article for investment securities, the bond shall be considered to be an investment security notwithstanding that: the ordinance, resolution, or other authority under which the bond is issued subjects the bond to an indenture or agreement that is separate from the ordinance, resolution, or authority; the ordinance, resolution, or other authority under which the bond is issued limits payment of principal and interest to: the proceeds of limited sources of revenue; or a special fund established for that purpose; any law limits payment of principal and interest to a certain amount or rate of tax that may be imposed; or principal or interest are registrable. A bond that is considered to be an investment security under subsection (b) of this section has all the attributes of an investment security that are possessed by a bond that is: issued on the full faith and credit of the governmental entity; payable to bearer; and secured as to the payment of principal and interest by the unlimited taxing power of the governmental entity.